diff --git a/build-constraints.yaml b/build-constraints.yaml
index 75025003..b3aad667 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -981,7 +981,7 @@ packages:
         - perfect-hash-generator
 
     "Alan Zimmerman @alanz":
-        - ghc-exactprint
+        - ghc-exactprint < 1.9 # https://github.com/commercialhaskell/stackage/issues/7418
         - hjsmin
         - language-javascript
         - Strafunski-StrategyLib